. .   ..                   
 .  ..# #                     
.#. ... ..                    
...  ..  #                    
 #..# . .#                    
.#... .#.                     
......#.####                  
   #.......#   ##..           
   #.##.... ## ...#           
     ...#.#..#....            
   #..#... ..#..#.            
   #∩..#..##.....#.           
 ...#.###.#...#....           
 #...####........#            
..#..........#...#            
#..#..#.#..x#..#              
 #.# ...##..# .#              
   ....  ....  ..             
    ... ##..##  .#            
   ..#   ..##    .#           
         ##.      #